The unmanned Cygnus spacecraft is expected to be grabbed by the orbiting lab's huge robotic arm at 7:15 a.m. EDT Sunday, with docking operations starting two hours later. You can watch the action live here at SPACE.com, beginning at 4:30 a.m. EDT.

A new hybrid small satellite called CASSIOPE is scheduled to launch aboard a SpaceX rocket in 2013. It is carrying a payload named Cascade, whose purpose is to move high volume data anywhere in the world.

A new robotic commercial cargo ship for the International Space Station skipped its first attempt to link up with the orbiting lab Sunday (Sept. 22) due to a rendezvous glitch that delayed its arrival for 48 hours, NASA officials say

The unmanned Cygnus spacecraft is expected to be grappled by astronauts using the orbiting outpost's huge robotic arm at 7:25 a.m. EDT Sunday. If all goes according to plan, the spacecraft will be secured to its docking port beginning at 9:15 a.m. EDT.

The first American space traveler to follow his astronaut father into orbit is selling some of his memorabilia, including a model based on a rocket designed by Konstantin Tsiolkovsky, Russia's "father of space travel."

Anomalies discovered during a Sept. 12 hot-fire test, coupled with upcoming missile tests at the Vandenberg Air Force Base in California, have delayed the inaugural launch of SpaceX's Falcon 9 v1.1 rocket to the end of September, CEO Elon Musk said Sunday

In an old World War II-hangar in blistering hot Mojave, Calif., a passionate group of young aerospace engineers is building the private spaceship called Lynx, which is the main competitor of Virgin Galactic's SpaceShipTwo.

The Cygnus spacecraft, which is built by aerospace firm Orbital Sciences, passed its launch readiness review and is now set to lift off Wednesday from NASA's Wallops Flight Facility in Virginia, officials announced Monday (Sept. 16).

A commercial Antares rocket rolled out to its Virginia coast launch pad Friday carrying a brand-new Cygnus supply ship poised to make its debut test flight to the International Space Station on Wednesday.

Virgin Galactic looks poised to begin launching paying passengers into space by 2014, but the private spaceship company is going needs more folks with the "right stuff. Enter, the Virgin Galactic Career Fair.

At the Explorers Club, two of the world's first space tourists traded stories about their astronaut toilet training with the Russians, or lack of it. See how private space travelers Richard Garriott and Dennis Tito compared notes.

SpaceX aims to launch an upgraded version of its Falcon 9 rocket from a newly refurbished pad at California's Vandenberg Air Force Base on Saturday (Sept. 14) in a mission that will also attempt to recover the rocket's first stage.

Serial innovator Elon Musk is living up to his reputation as a real-life Tony Stark. In a new video, Musk shows off the excessively cool "Iron Man"-like tech that is quite literally at his fingertips inside the rocket-making labs of his company SpaceX.

Virgin Galactic's private spaceship flew higher and faster than it ever had before on Thursday (Sept. 5), giving company officials confidence that the vehicle is on track to start carrying passengers on suborbital jaunts next year.

See photos of Virgin Galactic's second rocket-powered test flight over the Mojave Air and Space Port on Sept. 5, 2013. The test flight marked the highest yet and included a test of the craft's novel feathering system.

The space tourism company Virgin Galactic performed the second rocket-powered flight test of its SpaceShipTwo passenger spacecraft Thursday (Sept. 5), marking a major milestone for the spaceflight company. See how the flight went.

The DC-X (Delta Clipper Experimental) was a prototype for a reusable space launch vehicle tested in the 1990s. See how fully reusable launch vehicles are envisioned to work in this SPACE.com infographic.

The private spaceflight firm SpaceX has notched a key milestone in its quest to launch humans to orbit, just three days after company founder and CEO Elon Musk unveiled his futuristic "Hyperloop" transportation concept to the world.

SpaceX's reusable rocket prototype, dubbed Grasshopper, is designed for vertical takeoffs and landings, but in the commercial spacecraft's latest test flight, Grasshopper proved it could hop sideways, too.

The Falcon 9 test rig (codenamed Grasshopper) successfully completed a 'divert' test, with the ship making a 100m lateral maneuver while reaching an altitude of 250m. This test demonstrated the ships ability to make more aggressive maneuvers.

The super-fast "Hyperloop" travel concept is just the latest in a series of big, bold dreams by billionaire entrepreneur Elon Musk. Here's a quick look at six ways the South African-born billionaire has changed the world — or is hoping to in the future.

Billionaire entrepreneur Elon Musk's vision for a futuristic Hyperloop transportation system concept involves sleek passenger capsules flying within a tube on a cushion of air. See how the ultra-fast system could get from N.Y. to S.F. in 30 min.

The Hyperloop, Musk revealed today (Aug. 12), is a solar-powered transportation system that could rocket passenger-packed pods through long tubes at 760 mph or so (1,220 km/h). The technology could cut the LA-San Francisco travel time to 30 minutes.

The fevered speculation about billionaire entrepreneur Elon Musk's mysterious "Hyperloop" transport system is about to come to an end. Musk has said he will unveil a design Monday after teasing us about the travel technology for more than a year.